I was looking for this for some hours, so I just wanted to share:
- Open Disk Utility (Cmd + Space , if you type that in Sportlight, it will come up)
- Select the device and Unmount, not eject
- Select the device again and click on Info
- Copy the disk id. It should be something like "disk2s1"
- Go to the terminal (use spotlight again)
sudo newfs_msdos -F 32 /dev/[the disk id here]
You are done, you should be able to copy and paste in OsX.